Changes
From Karnataka Open Educational Resources
110 bytes removed
, 17:35, 11 July 2014
Line 365: |
Line 365: |
| # addition and multiplication of fractions | | # addition and multiplication of fractions |
| #unit of area | | #unit of area |
− | solution: r=5cm, h=14cm, Л= | + | solution: r=5cm, h=14cm, Л=<math>{\frac{22}{7}}</math><br> |
− | Curved surface area of cylinder and area of one circle= CSA of cylinder+area of circle | + | Curved surface area of cylinder and area of one circle= CSA of cylinder+area of circle<br> |
− | =2Лrh+ Л
| + | =<math>2Лrh+Лr^2</math><br> |
− | = 2XX5X14+X
| + | =<math>2X{\frac{22}{7}}X5X14+{\frac{22}{7}}X{5^2}</math><br> |
− | =440+78.5
| + | =440+78.5<br> |
− | =518.5
| + | =518.5cm |
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− | Cardboard required to prepare 42 penstands= 42X518.5=21777 | + | Cardboard required to prepare 42 penstands= 42X518.5<br> |
− | | + | =<math>21777{cm^2}</math><br> |
− | =2.1777
| + | =<math>2.1777{m^2}</math><br> |
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